97 E420 Check Engine light
 

This time the car appears to be running fine but the light came up.

Got the following code:

P0432


Any ideas would be appreciated.

code
 

P0432 defines as (TWC right below efficienct threshold, left TWC efficiency below threshhold

saying the cats are possibly weak

well thats an expensive proposition
 

I had the cat on the drivers side go on me last year, cost a small fortune.

Could it be the 02 sensor
 

Ok the car has 90,000 miles, Is this code for the drivers side or passenger side cat?

I replaced the Cat on the drivers side at 80,000 miles with an aftermarket one. I know that this was not the ideal option but that said, no cat should go so quickly.

Could this be the 02 sensor. How would I best test this before I spend a bunch of cash on parts?

Any advise would be appreciated.